For a moment, Hattie looks shocked. She was just waiting for him to say 'no' so she could stick it to him, so getting the opposite answer quite clearly caught her off-guard.

".. Oh." The uncertainty's clear in her expression, but she doesn't write it off completely. She just doesn't know how to respond to it, nor sure what that means in the bigger picture.

When suddenly a lightbulb goes off. "Oh no, I'm not letting you gloss it over that easily. I do believe you actually. I just don't think you would have wanted to. Right?"